Scrap chopper



` March 24, 1931. w @FORMAN 1,797,950

SCRAP CHOPPER Filed Nov. 2. 1929 2 Sheets-Sheei 1- March 24, 1931. l w, 0. FORMAN 1,797,950

SCRAP CHOPPER Filed Nov. 2, 1929 2 Sheets-Sheff- 2 ma?? WzZZz'aWz @fr-moza ,Gy W f i Patented Mar. 24, 1931 UNITED STATI-:s

PATENT OFFICE' WILLIAM FORMAN, F FITCI-HIBURG, MASSACHUSETTS, ASSIGNOR. TO MANNING, MAXWELL & MOORE, INC., OF NEW YORK, N. Y., A CORPORATION 0F NEW JERSEY SCRAP onorrnn Application led November 2, 1929. Serial No.'404,454.

lThis invention relates to a machine for lcho ping up the scrap produced at the sides trimming their ed es.

The principal o jects of the invention are c to tprovide a chopper involving a fixed knife one or more rotary knives mounted on a rotor, the fixed knife being located 1n position to receive the scrap from the sheets or packs directly from the machine; to provide f means for operating -the rotor by a moto;` which will take up very little space and to provide a construction in which the chopper on one side of the shearing machine is adjustable to provide for sheets of different widths. c

Other objects andadvantages of the invention will appear hereinafter.

' Reference is to be had to the accompanydrawings in which idg. lis a. side view of a part 'of a sheet trimming machine showing the scrap chopper on'one side 1n slde elevation;

Fig: 2 is a similar view of the other side of the machine showing the means for guiding the scrap into the chopper and showing the act of cutting the scrap;

Fig. 3 is a plan of a portion of a sheet to be trimmed showing the scrap that is introduced into this chopping machine;

Fig. 4 is an end view of the chopper, and

Fig. 5 is an end view ofthe rotor showing how it acts to chop the scrap.

On the bed plate 10 of the machine is a rest 11 or transverse guide for supporting the frame 120i the chopper unit. I have shown this part of the construction for the side of the machine on which the adjustable chopper is located. The adjustable unit is moved along the guide 11 by means of traverse' screw 9 and hand wheel 8. A steel scale suitably graduated is rovided for properly positioning this mova le chop er.

On the other side of t e trimming ina-y chine the frame 12 is bolted directly to the member 11' which in that'case would not be a guide. On this frame 12 is carried'the motor 13 directly. The motor is mounted on large Sized ball bearings effectively sealed to lprevent scale fromv entering and the thrust is taken byv a roller thrust bearing'.

This chopper shaft isarranged at an inclination preferably and is provided with a rotor 17 fixed directly thereon. The chopper rotor and rotor shaft may conveniently be formed ofl a steel casting and in a single piece. The rotor is provided with one or more arms radiating therefrom. I `have shown two in the present case each' having a chopping blade 18 and therefore cutting the scrap against a stationary blade 1'9 twice during each rotation of the shaft 16.

Of qourse, the sheet metal plates 20 are fed through the shearingmachine 21 at a desired rateof speed and the scrap 22 is sheared off the-edge at a-certain rate. The lenghts into which the scrap can be chopped in this cho "26,l the details of which are not described herein because that is not a partl of this invention, force the'scrap down in an inclined direction on the stationary hardened steel blade 19. The blade 19 is inclined toward its cutting edge in the same plane as that in which the scrap is fed to it `so the scrap will be flat on this blade or nearly' so. The blades 18 come around by' the operation of the motor to cut up the scrap into small pieces as for example, from four to eight inches in length. The chopped pieces of scrap fall out of the machine over the edge' of the blade 19 and can be disposed of in `anydesired way. This inclination is parallel to the axis of the shaft 16 or preferably in the/same plane.

- It will, be understood that the entire chopping'device fora shearing 'machine consists of two separate units, each driven by an end mounting type motor 13; one-of the units being stationary and the other adjustable, the latter being the one illustrated.

Although I have illustrated and described only one form of the invention I am aware of 5 the fact that modifications can be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims.

Therefore, I do not wish to be limited in this respect but what I do claim is 1. The combination with an edge trimming machine, of a stationary blade, means for guiding the scrap from the edge of the sheet being trimmed directly over said stationary blade, downwardly in an inclined direction, the fixed blade being inclined in the same direction toward its edge and a rotor located laterally at the side of the blade and of the `path along which the scrap travels having a plurality of cutting blades rotating and-cov operating therewith to chop the scrap into small pieces.

2. The combination with an edge trimming machine, of a stationary blade, means for guiding the scrap from the edge of the sheet being trimmed directly over said stationary blade, downwardly in an inclined direction, the fixed blade being inclined in the same direction toward its edge and a rotor having a plurality of cutting blades lrotating on an axis parallel to the 'inclined upper surface of the stationaryblade and cooperating therewith to chop the scrap into small pieces.

3. In a scrap chopper, the combination of a stationar blade over which the'scrap is adapted to be fed toward and over its cutting t edge, a shaft located with its axis in the plane of the surface of said blade which receives the scrap and a rotor on said shaft having cut- 40 ting blades thereon having their cutting edges in position to cooperate with the stationary blade to chop up the scrap. y

I 4. In a device for deliecting side scrap, the combination with a pair of delivery rolls throughwhich the sheets or packs and side scrap are delivered, of a blade at the end of the pair of rolls for bending the scrap downwardly as it issues from between the rolls, a blade for the lower roll in position to prevent the passage of any pieces of scrap around the bottom roll, a chopper in position to receive Y the scrap from the first named blade, said chopper comprising a stationary blade over which the scrap is fed, the upper surface of said blade being located on a line substantially tangent to the delivery side of the lower roll, and a rotor having a plurality of cutting blades rotating on an axis parallel to the 'm. clined upper surface of the stationaryvblade and cooperating therewith to chop the `scrap into small pieces. Y i' l In testimony whereof `I have hereunto af,

fixed my signature.`

' W.4 O. FORMAN. 

